Intra-trunk and arm coordination displayed by Olympic rowing athletes

Area of Science:

• Sports Biomechanics
• Human Movement Science
• Rowing Performance Analysis

Background:

• Understanding athlete biomechanics is crucial for optimizing performance and preventing injury.
• Rowing requires complex coordination between trunk segments and upper limbs.
• Elite athlete movement patterns provide insights into efficient technique.

Purpose of the Study:

• To analyze the intra-trunk and upper arm coordination in Olympic rowers during ergometer rowing.
• To investigate how different stroke rates affect coordination patterns.
• To identify optimal coordination strategies for training.

Main Methods:

• Kinematic data of trunk segments and upper arms were collected from 59 Olympic rowers.
• Vector coding method was used to quantify coupling angles between segments (lumbar-pelvis, thorax-lumbar, upper arm-thorax).
• Coordination patterns (in-phase, anti-phase, etc.) were analyzed using three-way, mixed-model ANOVA across three stroke rates (18, 26, 32 strokes/min).

Main Results:

• Rowers predominantly exhibited in-phase coordination between trunk segments and upper arms.
• In-phase coordination increased with higher stroke rates during the drive phase.
• During recovery, trunk segments rotated in-phase while the upper arm flexed to maintain stroke length at higher rates.
• Gender differences were minimal, except in upper arm-thorax coordination.

Conclusions:

• The in-phase coordination pattern is dominant in elite rowers and should be emphasized in training, particularly the pelvis-lumbar spine link for high-volume/intensity rowing.
• Athletes should leverage in-phase coordination during the drive phase to enhance power output at increased stroke rates.
• Understanding these coordination strategies can inform targeted training interventions for improved rowing efficiency and performance.